The United States will deliver 31 Abrams tanks to Ukraine, a senior US official said Wednesday, adding to a growing fleet of Western armor being assembled for Ukraine, AFP reported.

"The US is going to send 31 M1 Abrams tanks," a senior administration official told reporters, speaking on condition of anonymity. "You're going to see hundreds of armored vehicles -- exceptionally capable vehicles -- and tanks arriving in Ukraine and, importantly, they will be arriving with trained crews."